🔍 Key Concepts

• Hook load definition on a drilling unit like the COASTAL DRILLER • Difference between weight hanging on the hook/traveling block vs. weight stored in the setback or structure • Which components of the drilling equipment are actually suspended vertically in the derrick during drilling

💭 Think About

• Ask yourself: At any given moment while drilling, what is physically hanging from the hook and traveling block? • Which of these choices represents weight that is RACKED or SUPPORTED elsewhere (like in the derrick structure or casing support) and therefore not directly on the hook? • Think about which option is always part of the vertical load when you pick up or lower into the hole.

✅ Before You Answer

• Verify which item is directly attached to the hook/traveling block during normal drilling operations. • Identify which option is stored as setback (stands racked back on the derrick floor) and therefore not part of hook load when racked. • Confirm which items are structural/tension loads on casing or conductor, rather than being lifted by the hook.